Wiki: "Building a Flex S-Control Mashup," from Salesforce.com. Discusses what can be done with FLEX and AJAX on an Apex platform, the project, getting started, the view, controlling logic, and the development process.

Wiki: "Creating Applications with the Apex Platform," from Salesforce.com. Discusses an introduction to the Apex platform, the Apex platform at work (including customization, integration, and application creation, development and distribution), Apex features and concepts (including multi-tenancy, Apex builder, Apex API, Apex OS, Apex code, and the AppExchange Directory), web services integration, and the Apex application types.